If you are within 0.7 ~ 1m (28 ~ 39.3 in) from the outside tailgate handle, with your smart key in possession, the tailgate will unlock and open when you press the tailgate handle switch.
The hazard warning lights will blink twice to indicate that the tailgate is unlocked.
Also, once the tailgate is opened and then closed, the tailgate will lock automatically.
Kia Niro 2017 (DE HEV) Service Manual: Blind Spot Detection Radar Calibration Description and operation
Description
To correctly sense vehicles on the neighboring lanes using the radar, the direction
of the sensor and the direction of the vehicle must be aligned.
This is the BSD unit alignment. If this alignment is not performed as in illustration
below, it may cause degradation of ...
Kia Niro 2017 (DE HEV) Service Manual: Front Pillar Trim Components and components location
Component Location
1. Front pillar trim
...